When making double sided prints from the CM3530 itself it always prints the first side of the next page while flipping the current page over in order to maintain full print speed even during duplex jobs (what's this feature called? My Canon didn't do that and as such was much slower in duplex mode).
Anyway, when printing long PDFs from my PC (connected by USB) it often alternates between printing while flipping the page over and not printing while flipping the page over. Is this normal or could it be due to a too slow communication between the PC and printer? How do I make sure it's operating at USB 2.0 speed? Or could it be lack of RAM in the machine itself?
I just thought of something, I guess if I send the job to be stored on the printer and then print it from the printer's stored jobs, that should tell me if it's communication speed from the PC that's too slow.
Well I just did that test and printing the same PDF from the printer's stored jobs printed it at "full speed" throughout the document, so it seems my theory of too slow communication between the PC and printer is right. Is USB 2.0 fast enough for the printer to not have to stop to wait for data? If so it might be running in USB 1.0 or 1.1 mode. How do I check this?